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Experiment #1

Problem Statement

What type of acid will corrode copper the most?

Research

• Corrosion

Corrosion is the weathering away of metals concluding in rust or there being missing parts in the metal. There are different types of corrosion Galvanic and Crevice Corrosion. Galvanic Corrosion is when two different metals have electrical or physical contact with each other and are in a common electrolyte (which is any substance containing any free ions). Crevice Corrosion is when the metal is getting corroded thorough small crevices in the metal .

Hypothesis

If I use Aluminum Brightener then it will corrode the copper the most .

Independent and Dependent

Independent

Type of acid

Dependent

How much is corroded

Controlled

• Type of material
• Amount of acid
• Acid Concentration
• Time
• State of material

Materials and Procedure

Materials

• Aluminum Brightener
• Bleach
• Vinegar
• 3 pennies
• 3 Measuring cups
• Timer

Procedure

1. Set up the cups
2. Fill up the cups with one acid up to 30 mL
3. Start the timer simultaneously as you drop in the penny
4. Wait until 25 min. to take out the metal
5. Repeat all steps 3 times the same and 3 times using 2 different acids.

Data

Aluminum Brightener = 70%
Bleach = 10%
Vinegar = 30%

Conclusion

I conclude that my hypothesis was correct and that Aluminum Brightener corroded the most

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Experiment #2

Problem Statement

What type of metal will be corroded the most?

Research

• Corrosion

Corrosion is the weathering away of metals concluding in rust or there being missing parts in the metal. There are different types of corrosion Galvanic and Crevice Corrosion. Galvanic Corrosion is when two different metals have electrical or physical contact with each other and are in a common electrolyte (which is any substance containing any free ions). Crevice Corrosion is when the metal is getting corroded thorough small crevices in the metal .

Hypothesis

If I use Aluminum then it will corrode the most .

Independent and Dependent

Independent

Type of metal

Dependent

How much is corroded

Controlled

• Type of acid
• Amount of acid
• Acid Concentration
• Time
• State of material

Materials and Procedure

Materials

• Aluminum Brightener
• 3 measuring cups
• Timer
• 1 penny
• 1 nickel
• 1 piece of aluminum

Procedure

1. Set up the cups
2. Fill up the cups with aluminum brightener up to 30 mL
3. Start the timer simultaneously as you drop in the metal
4. Wait until 25 min. to take out the metal
5. Repeat all steps 3 times the same and 3 times using 2 different metals.

Data

Penny = 30 %
Nickel = 40%
Aluminum = 60%

Conclusion

I conclude that my hypothesis was correct and that Aluminum corroded the most

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Experiment #3

Problem Statement

What amount of acid will corrode copper the most?

Research

• Corrosion

Corrosion is the weathering away of metals concluding in rust or there being missing parts in the metal. There are different types of corrosion Galvanic and Crevice Corrosion. Galvanic Corrosion is when two different metals have electrical or physical contact with each other and are in a common electrolyte (which is any substance containing any free ions). Crevice Corrosion is when the metal is getting corroded thorough small crevices in the metal .

Hypothesis

If I use different amounts of acid then it wont make a difference in amount of corrosion.

Independent and Dependent

Independent

Amount of acid

Dependent

How much is corroded

Controlled

• Type of acid
• Type of Material
• Acid Concentration
• Time
• State of material

Materials and Procedure

Materials

• Aluminum Brightener
• 3 measuring cups
• Timer
• 3 pennies

Procedure

1. Set up the cups
2. Fill up the cups with aluminum brightener up to 30 mL
3. Start the timer simultaneously as you drop in the metal
4. Wait until 25 min. to take out the metal
5. Repeat all steps 3 times the same and 3 times using 2 different amounts of acids

Data

10 mL = 30 %
20 mL = 50 %
30 mL = 75 %

Conclusion

I conclude that my hypothesis was incorrect and that 30 mL corroded the most

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